Did you run the zmmailboxdctl restart command first, as clearly noted in the patch guide?

Actually,

The patch guide states to run the zmprov fc locale and then restart:

Code:

The patch is delivered as a zipped tgz file.
1. Copy the patch.tgz file to your server
2. Log in as root and cd to the directory where the tar file is saved
3. Type
tar xzvf zcs_patch-<version>.tgz
cd zcs-patch-<version>
./installPatch.sh
4. If this patch is installed on a server with the zimbra-store package installed, the local cache must
be flushed. Type
zmprov fc locale
5. Once the patch is complete, ZCS should be restarted for changes to take effect. Type
zmcontrol restart